China's Zhizhen Zhang hits a return to Czech Republic's Tomas Machac during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 7, 2026. (Photo by Hector RETAMAL / AFP via Getty Images)

China's Zhizhen Zhang hits a return to Czech Republic's Tomas Machac during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 7, 2026. (Photo by Hector RETAMAL / AFP via Getty Images)

Czech Republic's Tomas Machac hits a return to China's Zhizhen Zhang during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 7, 2026. (Photo by Hector RETAMAL / AFP via Getty Images)

China's Zhizhen Zhang hits a return to Czech Republic's Tomas Machac during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 7, 2026. (Photo by Hector RETAMAL / AFP via Getty Images)

Czech Republic's Tomas Machac hits a return to China's Zhizhen Zhang during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 7, 2026. (Photo by Hector RETAMAL / AFP via Getty Images)

Czech Republic's Tomas Machac hits a return to China's Zhizhen Zhang during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 7, 2026. (Photo by Hector RETAMAL / AFP via Getty Images)

Czech Republic's Tomas Machac hits a return to China's Zhizhen Zhang during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 7, 2026. (Photo by Hector RETAMAL / AFP via Getty Images)

Czech Republic's Tomas Machac hits a return to China's Zhizhen Zhang during their men's singles match at the Shanghai Masters tennis tournament in Shanghai on October 7, 2026. (Photo by Hector RETAMAL / AFP via Getty Images)